Node20x 运行时 lambda 在 AWS Step Functions 中抛出格式错误的错误，而 Node18x 则抛出预期的错误格式

Question

在 Node18x 运行时上运行的 AWS lambda 在 Node20x 运行时上运行时会引发不同的异常。

我在 AWS 状态机中使用了 lambda 函数。状态机对于 lambda 抛出的不同异常有重试机制。当我使用 Node18x 运行时作为 lambda 时，这是有效的。然而，由于异常格式会冒泡，它在 Node20x 运行时不起作用。

目标是将所有 lambda 迁移到最新支持的 AWS Node 运行时

这是阶跃函数 lambda 的示例：

"Send Request Upstream": {
     "Type": "Task",
     "Resource": "arn:aws:states:::lambda:invoke",
     "OutputPath": "$.Payload",
     "Parameters": {
          "Payload.$": "$",
           "FunctionName": "arn:aws:lambda:af-south-1:xxxxx:function:do-some-work"
          },
          "Retry": [{
                    "ErrorEquals": [
                         "Lambda.ServiceException",
                         "Lambda.AWSLambdaException",
                         "Lambda.SdkClientException",
                         "Lambda.TooManyRequestsException",
                         "InternalServerException",
                         "RateLimitException",
                         "TimeoutException"
                     ],
                       "IntervalSeconds": 2,
                       "MaxAttempts": 10,
                       "BackoffRate": 2,
                       "JitterStrategy": "FULL"
                      },
                      {
                        "ErrorEquals": [
                             "UnreachableServerException",
                             "ServiceTemporarilyUnavailableException"
                          ],
                            "IntervalSeconds": 5,
                            "MaxAttempts": 10,
                            "BackoffRate": 3,
                            "JitterStrategy": "FULL"
                           }
                       ],
                       "Next": "DeleteMessage"
              }

Node18x 运行时抛出的错误

{
  "errorType": "UnreachableServerException",
  "errorMessage": "connect ETIMEDOUT XX.XXX.XX.41:443",
  "trace": [
    "Error: ",
    "    at Object.<anonymous> (/XXXXXXXXXX/Exception.ts:43:40)",
    "    at Module._compile (node:internal/modules/cjs/loader:1356:14)",
    "    at Module.m._compile (/XXXXXXXXXX/node_modules/@pulumi/pulumi/vendor/[email protected]/index.js:3009:23)",
    "    at Module._extensions..js (node:internal/modules/cjs/loader:1414:10)",
    "    at Object.require.extensions.<computed> [as .ts] (/XXXXXXXXXX/node_modules/@pulumi/pulumi/vendor/[email protected]/index.js:3011:12)",
    "    at Module.load (node:internal/modules/cjs/loader:1197:32)",
    "    at Function.Module._load (node:internal/modules/cjs/loader:1013:12)",
    "    at Module.require (node:internal/modules/cjs/loader:1225:19)",
    "    at require (node:internal/modules/helpers:177:18)",
    "    at Object.<anonymous> (/XXXXXXXXXX/utils.ts:4:21)",
    "    at Axios.request (/var/task/node_modules/axios/dist/node/axios.cjs:4224:41)",
    "    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)",
    "    at async __f13.<anonymous> (/var/task/__index.js:464:26)",
    "    at async __f13.<anonymous> (/var/task/__index.js:498:27)",
    "    at async __f9.<anonymous> (/var/task/__index.js:582:26)",
    "    at async Runtime.<anonymous> (/var/task/__index.js:655:22)"
  ]
}

Node20x 运行时抛出的错误

{
  "errorType": "object",
  "errorMessage": "UnreachableServerException",
  "trace": []
}

错误是如何抛出的

按照示例：https://docs.aws.amazon.com/step-functions/latest/dg/tutorial-handling-error-conditions.html

function UnreachableServerException(name, message) {
    this.name = name
    this.message = message
}

UnreachableServerException.prototype = new Error()


throw new UnreachableServerException("UnreachableServerException", message)

我尝试过以下方法，但即使在 Node18 上也不起作用

class UnreachableServerException extends Error { 
    constructor(name, message) {
        super(message)
        this.name = name
    }
}

throw new UnreachableServerException('UnreachableServerException', 'Unable to reach server")

Answer 1

您介意添加整个 Lambda 代码吗？我测试了以下内容：

export const handler = async (event) => {
   UnreachableServerException.prototype = new Error()
   throw new UnreachableServerException("UnreachableServerException", "my-test")
};

function UnreachableServerException(name, message) {
    this.name = name
    this.message = message
}

我明白了：

{
  "errorType": "UnreachableServerException",
  "errorMessage": "my-test",
  "trace": [
    "Error",
    "    at Runtime.handler (file:///var/task/index.mjs:2:43)",
    "    at Runtime.handleOnceNonStreaming (file:///var/runtime/index.mjs:1173:29)"
  ]
}